CA Sts & High Code Section 8664

Each bond, or any portion of the bond in a fixed amount or any integral multiple of the fixed amount, shall be subject to redemption in advance of its maturity on any interest payment date upon payment to the registered owner of the principal and accrued interest to the date of redemption together with a redemption premium, if any, as determined by the legislative body, not to exceed 5 percent of the principal.